How can i register mobile number on my sbi debit card?

Hello friends!!! There is a problem with my sbi classic debit card. There is no sms alrt comes when i trasact cash at ATM machine. When i'm going for online transaction it needs an OTP (one time pasward) send through phone. But in my case shows 'the mobile no. is not register on the card. So plz help how... show more Hello friends!!!
There is a problem with my sbi classic debit card. There is no sms alrt comes when i trasact cash at ATM machine. When i'm going for online transaction it needs an OTP (one time pasward) send through phone. But in my case shows 'the mobile no. is not register on the card. So plz help how i can register my mobile number on my card.

Thanks...:)
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